1. What is the HVAC Square Feet Conversion?

The HVAC square feet conversion calculates the required cooling capacity (in tons) for a space based on its area. This is a simplified method for estimating HVAC needs for residential applications.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Area \) — Area in square feet
• 25 — BTU per square foot (standard residential cooling load)
• 12000 — Conversion factor (1 ton = 12,000 BTU/hr)

Explanation: The formula converts square footage to cooling capacity by multiplying by a standard BTU per square foot value, then converting to tons.

3. Importance of Proper HVAC Sizing

Details: Proper HVAC sizing is crucial for energy efficiency, comfort, and system longevity. Oversized units short cycle, while undersized units run continuously without proper dehumidification.

4. Using the Calculator

Tips: Enter the total area to be cooled in square feet. This is a simplified calculation - for precise sizing, consult a professional Manual J calculation.

5. Frequently Asked Questions (FAQ)

Q1: Is 25 BTU/sq.ft always accurate?
A: No, this is a general estimate. Actual needs vary by climate, insulation, windows, and other factors.

Q2: What's the difference between a 2-ton and 3-ton unit?
A: A 3-ton unit has 50% more cooling capacity (36,000 BTU/hr vs 24,000 BTU/hr).

Q3: How many square feet will 1 ton cool?
A: Approximately 480 square feet (12,000 BTU ÷ 25 BTU/sq.ft).

Q4: Should I round up the tonnage?
A: HVAC units come in standard sizes (1.5, 2, 2.5, 3, etc. tons). Round to nearest standard size.

Q5: What if my calculation is between standard sizes?
A: Consider factors like climate (round up in hot climates) and future plans (adding rooms).